Allan Barbish, M.D.
NPI 1891743191 · Gastroenterology Physician · Portage, MI
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allan Barbish, M.D. is a Gastroenterology Physician provider in Portage, MI (NPI 1891743191).
Provider details
- NPI number
- 1891743191
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301406927 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
291 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 79 | $138 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 65 | $119 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 42 | $243 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High RiskG0121 | 33 | $166 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 28 | $177 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 175 | 78 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 66 | 66 |
| Omeprazole | 61 | 28 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 45 | 42 |
| Famotidine | 25 | 11 |
| Mesalamine | 22 | — |
| Lipase/Protease/Amylasebrand: Creon | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$125 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 1500 E Medical Center DrAnn Arbor, MI 48109-5000Phone: (734) 936-4000
- 1500 E Medical Center DrAnn Arbor, MI 48109-5000Phone: (734) 936-4000
Registry dates
- Enumerated
- 2006-05-05
- Last updated
- 2019-08-30
Frequently asked questions
- What is Allan Barbish's NPI number?
- Allan Barbish's National Provider Identifier (NPI) is 1891743191, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allan Barbish's specialty?
- Allan Barbish is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Allan Barbish located?
- Allan Barbish's practice location on file with NPPES is 3304 Cooley Ct, Portage, MI 49024.
- What is Allan Barbish's phone number?
- The practice phone number listed in the NPPES registry for Allan Barbish is (269) 349-2266.
- Does Allan Barbish accept Medicare?
- Allan Barbish is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Allan Barbish's NPI active?
- Yes — Allan Barbish's NPI (1891743191) is active in the NPPES registry as of the last update on 2019-08-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.